2D/2C/2U Dimmable Electronic Ballast (Floor Lamp),50/60Hz,PF>0.98,THD<10%,Frequency conversion preheat ... start,with dimming switch 2D/2C/2U Dimmable Electronic Ballast (Floor Lamp)(01.) Input Voltage range: 220V~240V , 110V , wide voltage110V ... (08.) With dimming swith(09.) Protection against lamp open circuit(10.) Protection against lamp fault condition(11.) IC control circuit(12.) Frequency ...